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Financial Instruments by Category - Schedule of Net Income and Expenses From Financial Instruments (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Financial liabilities at amortized cost | Interest expense |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Income and expenses on financial liabilities at amortized cost | ₩ (135) | ₩ (162) | ₩ (127)
Financial liabilities at amortized cost | Differences in foreign currency |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Income and expenses on financial liabilities at amortized cost | (1,773) | (1,344) | (1,301)
Financial assets at amortized cost | Interest income |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Income and expenses on financial assets at amortized cost | 17,059 | 11,487 | 4,496
Financial assets at amortized cost | Differences in foreign currency |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Income and expenses on financial assets at amortized cost | 5,813 | (1,654) | 2,101
Financial assets at fair value through profit or loss | Interest income |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Income on financial assets at fair value through profit or loss | ₩ 0 | ₩ 5 | ₩ 5

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